Improvement in calendar-clocks



3 Sheets-Sheet l.

T. vwlssm.l Calendar-Glock.

No. 211,816, Patentedlan.28,1879.

N. PETERS. PHOTOMTHOGRAPHER, WASHING? 0000 c.

s sheenssheen 2. T. WEISSBR.

Calendar-Glock.

No. 211,816, Patented 1an. 28, 1879.

TMm/ewa, TNW 1M"SW "Smwovwmbem N. METERS,4 FHOTOLITHDGRAPHER. WASHINGTON, D c.

3 sheet-Sheet s.

T. WEISSER. Calendar-Glock.

No. 211,816. Patented Jan; 28,1879.

Nms, PHOTO-UTMOGHAPHER, wAsmNGTON. Dv C.

UNITED STATES PATENT QEErcED THEODOR XVESSER, OF FURTVANGEN, ASSIGNOR TO JUNGHANS BROTHERS, OF SOHRAMBERG, VRTEMBEFG, GERMANY.

IMPROVEMENT IN CALENDAR-CLOCKS.

Specification forming part of Letters Patent No. 211,816, dated January Q8, 18.79; application filed December 1l, 1878; patented in England, October-14, 187.

To all whom it may concern:

Be it known that I, TrrEoDon Wnrssnn., of Furtwangen, in the Grand Duchy of Baden. and Empire of Germany, have invented a new and useful Improvement in Olocl-Caleii lais, which improvement is fully set forth in the following speciiication, reference being had to the accompanying drawings, in which- Figure l represents a front elevation of `my calendar. Fig. 2 is a vertical cross-section in the line .fc af, Fig. l. Fig. 3 is a like section in the line y y, Fig. 1. Fig. et is a like section in the line e z, Fig. l. Fig. 5 shows the inner side of the day-drum. Fig. is a plan view of the calendar, partly in section. Fig. 7 shows the inner side of the month-drum.

Similar letters indicate corresponding parts.

My invention relates to certain improvements in the construction of calendars for attachment to clocks, and it consists in the combination of the following instrumentalities-to wit: a roller carrying a band on which are marked numerals to indicate dates of the month, a prime mover adapted to be connected with a clock-movement for actuating the band-roller and date-band, mechanism for releasing the band-roller, and a spring or weight having a tendency to retract the date-band, with these parts being also combined two drums, one containing the naines of the days of the week and partalting ofthe forward motion of the bandroller and band, a-nd the other containing` the names of the months ofthe year, and the releasing-mechanism being also adapted to set the month-drum, so that if the band-roller is actuated once during every twenty-four hours, the dateband is as often partially wound thereon, and thereby moved iorward to show successive numerals, while the day-drum performs a like movement, and when the band-roller has been actuated a certain number of times-namely, either thirtyone,thirty, or twenty-eight times--correspon din g to the number of days in that month whose name is exposed, the b-androller is set free, the band is returned to its starting-point, and themcnth-drumis shifted to expose the name of another or successive month.

In the drawings, the letter A designates the frame of my calendar supporting a shaft or arbor, B, on which are mounted the bandroller O, the day-drum D, andthe month-drum E. IThe band-roller O is loose; but in its normal position it is caused to move with the shaft B, through the agency of a clutch-head, F, which is secured on the shaft, and with which the roller is caused to engage by the action of a spring, a. rihc band-roller is thrown out of gear with this clutch-head F at a certain period, hereinafter designated, by means of a lever, b.

rlhe letterGdesignates the date-band,which is attached to the band-roller C at its upper end, and onthcouterface of which are marked the numerals l to 3l, beginning at the tcp of the band. lVith the band-rollertlis combined a moving device consisting of a lever, c, (see Fig. 2,) from which is suspended an arm, d, engaging with ratchet-teeth c, formed on the periphery of the clutch-head F, the teeth being seven in number. To the lever c is connected one end of a rod, f, the other end of which, in practice, is connected with a clockmovement in such a manner that said lever is lifted and allowed to fall once during every twenty-four hours, whereby the band-roller U is turnedstep by step, and the apron G is wound thereon, the roller making one-seventh of a revolution each time it is actuated, so that the date-band is moved forward, and its numerals are exposed in proper order. This movement of thc band-roller() and date-band Gr is continued till the end of a mont-h, when the roller is disengaged from the clutch-head F, as presently described, so that it is free to rotate, and the band is allowed to unwind therefrom sufiicicntly to bring the numeral l to the starting-point. This position ofthe datc-band is determined by a stop, g, (see Fig. 4,) secured to the machine-frame in conjunction with a counter-stop, 71', projecting from a wheel which is geared with the band-roller C, and which forms part of the releasing mechanism. The date band G is retrated, and thereby unwound from the band-roller O by a spring, fi, (or by a weight-Q acting on a reel,

H, to which the lower end of the band is attached. y

The day-drum D is loose, and carries a spring-dog,j, (best seen in Fig. 5,) which engages with a toothed wheel, I, secured on the shaft, B, so that the day-drum is caused to turn with the shaft, but is susceptible of being turned back and regulated and since the shaft B turns only during the forward motion of the band-roller C and date-band, the daydrum partakes of such forward motion, but remains stationary during the retrograde motion of the roller and band.

The month drum E also is loose, but it is4 held stationary on the shaft B by a yielding stop, k, (best seen in Fig. 7,)f acting on av Ward movement and in the retrograde movement of the latter. The gearing of the loose cog-wheel L with the cog-'wheelKof the bandroller is such that to every one-seventh revolution` of the latter said loose wheel makes one thirty-iirst of a revolution, and hence when the date-band G is wound up or unwound from the bandroller, as before stated,the loose cogwheel makes one complete revolution.

The loose cogwheel L carries three spurs, a n n', on its outer surface, (best seen in Fig. 4,) the same being situated at unequal distances from the axis of the wheel. The outermost spur, n' corresponds in its operation to those months having thirty-one days, the next or intermediate spur, n, to those having thirty days, and the third or inner spur, '1l/",- to that having twenty-eight days. These.

spurs n n" uf" respectively actuate one part of a compound lever, N O. The part N of this lever has its fulcrum on a pivot, p, secured to the machine-frame, and swings in a vertical direction, while the part O of said lever swings horizontally on a pivot, q, projecting from the other part of the lever, as clearly shown in Fig. 4. The horizontal portion of the compound lever N O is provided with a beveled lug, o, Figs. 4 and 6, at one end, and with a pin, r, at its other end. This pin r impin ges upon the upper portion of the lever b, by which the band-roller C is thrown in and out of gear with its clutch. During the forv ward motion of the loose cog-wheel L, either of the spurs n', n, or w strikes against the beveled lng o, ac'cording to the position of the compound lever, and the horizontal portion, O, of said lever is displaced, 'so that the clutchlever bis pushed back by the pin r, and the band-roller C is released. The position of the compound lever N O is determined by a cam, P, (bcstseen in Fig. 7,) which is secured to .the inner end of the month-drum E, and on the Aface of which the compound lever is supported by means of a pin, t, projecting from the lower or vertical portion of said lever. This cam P is so shaped and arranged relatively to the spurs n' n n", and to the names marked on the periphery of the month-drum E, that when, forinstance, the name of the month of February is exposed, the compound lever occupies its lowest position, the,f innern1ostspur,n, actuates the same, and thebandroller E is released on the day. when the proper maximum numeral on the date-band is exposed, whilethe parts are likewise liberated at the end of the other or remaining months. This will be better understood by reference to the diagram shown in Fig. 7. Y

Each time the band-roller C is released and the date-band G is retracted the monthdrum E is actuated to bring forward the name of another or successive month. This is ac complished by combining with the monthdrum a dog or segment, Q, (see Fig. 4,) which rocks on a. pivot, u, secured to the 'machineframe, and has two projections, o o', one of which engages with the notched wheel J of the month-drum, while the other is arranged in the path of a pin, w, projectingl from the outer surface of the loose cog-wheel L. When the dateband Gr is retracted or unwound from. the roller C, and the loose cog-wheel L is rotated, the pin w comes in contact with the projection o of the dog Q, the latter is displaced, and the projection /v acts on the notched wheel J, whereby the month-drum is set. By this arrangement the setting of the month-drum is caused to take place simultaA neously with the liberation of the band-roller and baud.

The lever b of the releasing mechanism is caught or held by a pivoted weight, R, when the same is brought into play, and said weight vis raised at the proper time by the action of a tappet, S, connected with the prime mover ot' the machine.

What I claim as new, and desire to secure by Letters Patent, is

l. The combination of lower and upper band-rollers, H C, to which the ends of a band having printed thereon numerals 1 to 3l 'are attached, a clutch detachably connected with one end of the upper roller, and two mechanisms, such substantially as described, one of which is adapted to be connected with a clockmovement and with the clutch-head for rotating the roller C step by step at the expiration of every twenty -four hours, and the other adapted to automatically release the roller C from the clutch to permit the lower roller to rewind the said numerical band, as specified.

2. The combination, in a clock-calendar, of a roller carrying a band on which 'are marked numerals to indicate dates of the month, a prime mover adapted. to be connected with a clock-movement for actuating the band-roller, a spring or weight having a` tendency to retract the date-band, with two drums, one con- In testimony whereof have hereunto set taining the names of the days of the week my hand this 6th day of April7 1878.

and partalring of the forward motion of the band-roller, and the other Containing the names of the months of the year, and meehanism whereby the band-roller is released and Witnesses:

THEODOR VEISSER.

the month-drinn is set simultaneously, all eon- FRANZ WIRTH, strueted and operating substantially as de- FRANZ HASSLAGHER. scribed. 

